Sulfonated Poly(arylene sulfide sulfone nitrile) Multiblock Copolymers with Ordered Morphology for Proton Exchange Membranes

Autor:	Louis A. Madsen, Young Moo Lee, Dong Won Shin, Chang Hyun Lee, James E. McGrath, Kwan-Soo Lee, Chi Hoon Park, So-Young Lee, Mark D. Lingwood, Mingqiang Zhang, Inchul Hwang, Young-Taek Kim, Robert B. Moore
Rok vydání:	2013
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Nitrile Sulfide Organic Chemistry Arylene Conductivity Sulfone Inorganic Chemistry chemistry.chemical_compound Membrane chemistry Polymer chemistry Materials Chemistry Copolymer Lamellar structure
Zdroj:	Macromolecules. 46:7797-7804
ISSN:	1520-5835 0024-9297
Popis:	Ordered morphologies in disulfonated poly(arylene sulfide sulfone nitrile) (SPSN) copolymers were generated via thermal annealing followed by multiblock copolymer synthesis. While SPSN random copolymers (R-SPSN) showed featureless morphologies, the SPSN multiblock copolymers (B-SPSN) exhibited cocontinuous lamellar morphologies with a center-to-center interdomain size of up to 40 nm. In spite of the well-ordered, interconnected hydrophilic domains, the water self-diffusion coefficient (e.g., D = (0.7–2.0) × 10–10 m2 s–1) and proton conductivity (e.g., σ = 0.16–0.20 S cm–1 in deionized water at 30 °C) through B-SPSN were lower than those of the corresponding R-SPSN (e.g., D = (3.5–3.9) × 10–10 m2 s–1 and σ = 0.21 S cm–1) due to the relatively lower water uptake of the B-SPSN after thermal annealing. The reduced water uptake of B-SPSN was beneficial to reduction of peroxide degradation rate. Thermal annealing produced significant gains in morphological ordering and finer control over desired membrane proper...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aaaf71aa981a3d14812d277b1f3beda2 https://doi.org/10.1021/ma400889t Zobrazit plný text záznamu